/**
 *    Copyright (C) 2008  Victor Smirnov <aist11@gmail.com>
 *
 *    This program is free software; you can redistribute it and/or modify
 *    it under the terms of the GNU General Public License as published by
 *    the Free Software Foundation; either version 3 of the License, or
 *    (at your option) any later version.
 *
 *    This program is distributed in the hope that it will be useful,
 *    but WITHOUT ANY WARRANTY; without even the implied warranty of
 *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *    GNU General Public License for more details.
 *
 *    You should have received a copy of the GNU General Public License along
 *    with this program; if not, write to the Free Software Foundation, Inc.,
 *    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 *    See LICENSE.exceptions in the root folder of this project for possible
 *    exceptions
 *
 */

#ifndef _CUBEFS_CORE_TOOLS_TYPES_ALGO_SORT_HPP
#define	_CUBEFS_CORE_TOOLS_TYPES_ALGO_SORT_HPP

#include <cubefs/api/types.hpp>

#include <cubefs/core/tools/types/algo/minmax.hpp>
#include <cubefs/core/tools/types/typelist.hpp>
#include <cubefs/core/tools/assert.hpp>


namespace cubefs    {
namespace tools     {


template <
        typename List,
        template <typename Item> class ValueProvider,
        bool Asc,
        typename ValueType = BigInt,
        typename Result = NullType>
class Sort;

template <
        typename SrcList,
        template <typename Item> class ValueProvider,
        bool Asc,
        typename ValueType,
        typename Result>
class Sort {

    CUBEFS_STATIC_ASSERT(IsList<SrcList>::Value);

    typedef typename IfThenElse<
                Asc,
                typename MinElement<SrcList, ValueProvider, ValueType>::Result,
                typename MaxElement<SrcList, ValueProvider, ValueType>::Result
    >::Result                                                                   Element;

    typedef TypeList<Element, Result>                                           List_;

public:
    typedef typename Sort<
                typename RemoveTool<Element, SrcList>::Result,
                ValueProvider,
                Asc,
                ValueType,
                List_
    >::List                                                                     List;
};


template <
        template <typename Item> class ValueProvider,
        bool Asc,
        typename ValueType,
        typename Result
>
class Sort<NullType, ValueProvider, Asc, ValueType, Result> {
public:
    typedef Result                                                              List;
};


}
}

#endif  //_CUBEFS_CORE_TOOLS_TYPES_ALGO_SORT_HPP